Cardiovascular system

Question 1

What are the main functions of the cardiovascular system? x3

Answer 1

1. Brings O2 and nutrients to the body’s cells
2. Removes waste and CO2
3. Carries hormones from and to parts of the body

Question 2

What are the main components of the cardiovascular system? x3

Answer 2

Heart
Blood
Blood vessels e.g. veins, arteries

Question 3

Where is the heart located?

Answer 3

Slightly left to sternum
Above diaphragm
In between lungs

Question 4

How is the heart made up?

Answer 4

x4 chambers: right atrium, right ventricle, left atrium, left ventricle
x4 valves: aortic, mitral, pulmonary, tricuspid (regulate blood flow through the heart)

Question 5

What is the simplified blood circulation process?

Answer 5

Right side: receives blood and sends it to the lungs
Left side: receives blood from lungs and pumps it around the body

Question 6

What do the processes of systole and diastole refer to?

Answer 6

Systole - ventricles contract - forces vessels to lungs
Diastole - ventricles relax

Question 7

How is the heart nourished?

Answer 7

Blood
Coronary arteries cover heart
Branch into smaller capillaries

Question 8

How is the heart kept beating?

Answer 8

Electrical impulses received by right atrium
Conduction system - keeps heart beating in a coordinated rhythm